BishBosh.Metric.WeightedMeanAndCriterionValues

AUTHOR

Dr. Alistair Ward

DESCRIPTION

The unweighted values of each criterion used to assess the fitness of a position, & the resulting weighted mean.

Types

Data-types

data WeightedMeanAndCriterionValues

A weighted mean & the individual unweighted criterion-values from which it was composed.

Instances

Eq WeightedMeanAndCriterionValues

Defined in BishBosh.Metric.WeightedMeanAndCriterionValues

Methods

(==) :: WeightedMeanAndCriterionValues -> WeightedMeanAndCriterionValues -> Bool

(/=) :: WeightedMeanAndCriterionValues -> WeightedMeanAndCriterionValues -> Bool

Show WeightedMeanAndCriterionValues

Defined in BishBosh.Metric.WeightedMeanAndCriterionValues

Methods

showsPrec :: Int -> WeightedMeanAndCriterionValues -> ShowS

show :: WeightedMeanAndCriterionValues -> String

showList :: [WeightedMeanAndCriterionValues] -> ShowS

NFData WeightedMeanAndCriterionValues

Defined in BishBosh.Metric.WeightedMeanAndCriterionValues

Methods

rnf :: WeightedMeanAndCriterionValues -> ()

ShowFloat WeightedMeanAndCriterionValues

Defined in BishBosh.Metric.WeightedMeanAndCriterionValues

Methods

showsFloat :: (Double -> ShowS) -> WeightedMeanAndCriterionValues -> ShowS

Constants

criterionValuesTag :: String

Qualifies output.

weightedMeanTag :: String

Qualifies output.

Functions

negateWeightedMean :: WeightedMeanAndCriterionValues -> WeightedMeanAndCriterionValues

• Negate the weightedMean, but leave the criterion-values unaltered.
• This can be used to assess the fitness of a position from the perspective of one's opponent.

calculateWeightedMean :: [(CriterionValue, CriterionWeight)] -> WeightedMeanAndCriterionValues

• Calculates the weighted mean of the specified criterion-values using the corresponding criterion-weights.
• Also writes individual unweighted criterionValues, to facilitate post-analysis; if the corresponding weight is 0, evaluation of the criterion is avoided, for efficiency.
• CAVEAT: if all weights are 0, then the result is indeterminate.

Constructor

mkWeightedMeanAndCriterionValues :: WeightedMean -> [CriterionValue] -> WeightedMeanAndCriterionValues

Constructor.